Excessively Restrictive

We’re staying in a rented vacation house—the kind that comes with a set of management instructions magneted to the refrigerator door. Most of them are sensible and helpful (“Barbecue works; be careful”). But I wonder about this departure protocol:

Turn everyone and everything upside down and shake to find all house keys…

This seems excessively restrictive. Considering some of your companions, aren’t there times when, even you had found the house keys, you might want to “turn [them] upside down and shake…”--?